In this project we will see how to build a pair of glasses in which the circuits for Bluetooth headsets are inserted in the frame. Therefore you can listen to music wirelessly while wearing. The circuit consists of three main parts: audio amplifier circuit, bluetooth module and charging module. The TP4056 acts as a charging…
In this project we see how to build a particular musical instrument called AirBass. It’s a sensor-based real electric bass emulation that allows the user to play distinct notes while not pressing strings. On a more specific level, the operation of AirBass can be broken down into four main components: “string” detection, “fret” detection, “string”…
In this article we will see how to build a fire and gas detection system that also provides protection. We use Arduino Nano as a microcontroller and two sensors: MQ-2 gas sensor and the flame sensor. We use a 16×2 LCD display to view live status. There are also PCB designed dual channel relays to…
Control any MIDI parameter value of your DAW through hand movements. The first controller was made using the knobs of a potentiometer, however the functionality of the knob is only to send values from 0-127 and this can be done by any means, so we thought of using the ultrasonic sensor. This design has been…
With this system, you no longer have to worry about your plant running out of water. Using a humidity level sensor, its water level will be monitored every 30 minutes and, if necessary, an extra spray will be given! The system also publishes all its measurements made thanks to the BME280 sensor in a site…
In this project we see how to build an Arduino-based capacitive kitchen timer that allows users to interact via touch input. The finished device is driven by ATMega328PU (the same microcontroller on which Arduino UNO is based). You will need a few components, but the end result will be a unique gadget that will liven…
In this project we see how to make a walkie-talkie using an ESP32; audio data is transmitted via UDP or ESP-NOW transmission. So the Walkie-Talkie will work even without a WiFi network! The system is based on an I2S microphone and an I2S amplifier, but it will work equally well with analog microphones and headphones…
In this project we will see how to recreate the Snake game on a matrix of LEDs. After loading, the game will automatically start with the snake in the lower left corner. An apple will randomly spawn and you can start moving the snake with a joystick. We have an 8 x 12 matrix of…
Do you usually have trouble getting up? You set a dozen alarms in the morning, but still can’t wake up? In this project we will try to solve the problem in an alternative and quite creative way by building an alarm clock that will ask random questions. It will stop making noise only if the…
This project is not only an intelligent coffee machine with smartphone control but also allows you to graphically view the temperature trend. It can be controlled via Bluetooth or simply fill up with fresh water and the system starts automatically! Developed on Arduino Nano, it uses an ST7920 display, an HC-05 Bluetooth module, a Dallas…
The “light painting” consists in photographing moving light sources and thus obtaining very particular and creative images; in this project we see how to build a bright skateboard for this purpose. We used an Arduino Nano as a microcontroller, the case was 3d printed. We connected a button and a switch so that we could…
Kutluhan Aktar has a gradually growing Twitter account for his website. Most of the time he forgets to check the follower trend to measure their growth. So, he decided to create this system to be placed on the desk that shows his account information, specifically: current follower count, current account name and ID, three previous…
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